Type-writing machine.



. l PATENTIID MAR. 3.1, 1908. I. o. MGLAUGHLIN.

TYPE WRITING MACHINE.

APPLICATION FILED 001219, 1905.

...UL @I No. 883,470. I PATENTBD MAR. 31, 1908.l

J. C. MULAUGHLIN.

TYPE WRITING MACHINE.

APPLICATION FILED 001219, 1905.

3 SHEETS-SHEET 2.

PAT-ENTED MAR. 31, 1908.

J. C. MGLAUGHLIN. TYPE WRITING MACHINE.

APPLICATION FILED 0GT.19, 1905.

UNITED STATES PATEN OFFICE'. JOHN C. MCLAUGHLIN, OF NEW YORK, N. ASSIGEOETO UNDERTVOOD TYPEWRITER COM- PANY, OF NEW YORK, N. Y., A CORPORATION Ob NEW JERSEY. l

TYPE-WRITING MACHINE.

Specification of Letters Patent.

PatentedMarch 31, 1908.

Application med october 19. 1905. semi No. 283,44o.

county ol New York and State of New York,

have invented certain new and useful Iniprovenients in l`ype-VVriting Machines, of which the following is a specification.

This invention relates to the ink ribbon mechanism of typewriting machines, particularly those in which the ribbon is vibrated to cover and uncover the printing point at the type strokes. i

The objectv of the invention is to provide commercially practicable means for permitting the tvpe impressions to be made in ink ol dillerent colors at will. vThis feature ol' operation is desirable not only in cases where it is desired to emphasize a woi'd b v writing' it in a color which contrasts with the body of the writing, butv also in cases where it is desired to carrY both record and copying `ribbons upon the machine 5 the former for' writing letters.

In` carrying out my invention I employ two ribbonsiaiid two vibrators, one for each ribbon, whereby ii mair be caused to cover anduncover the printing point atthe type strokes. For each ribbon I provide a pair ol' spools, and in the case of front strike writing machines, I preler to place one painof spools between the spools of the other pair, so that two spools are mounted edge to edge upon each side of the printing point or at legal documents and the latter' for each side ol" the machine. I provide a winding-mechanism which can be connected to either pair ol' spools at will, and I also provide means tor calling into action that vibra tor which carries the ribbon that is wound i upon that pair of spools wliichis associated at the time with the winding mechanism, so that when either ribbon is winding, it is also being vibrated to cover the print-ingl point at the type strokes, while tlieother ribbon is neither winding nor being vibrated.

`In the accompanying drawings, in which my impriwements are shown applied to the well known "Underwood front strike writing machine, ,Figure 1 is al rear elevation of the ribbon mechanism, showing the front ribbon elevated to cover the printing point,

and showing the spools which 'carry vsaid rib- `the longitudinal travel of the ribbon.' B v mounted between adjacent gears 3S, 39 xed rtypes 2, carried upon tvpe bars 3 and adapted to strike through either a front ribbon 4 or a rear ribbon 5, which are of different colors or qualities. The front ribbon 4 is Wound upona pair'of spools 6, 7 mounted at'opposite sides of th'e printing point and in front of the platen,` with their edges to the latter and contained in a )air of cups 8, 9. The 4ribbon which extends between thesespools is threadeti-through a vibrator 10 standing infrontiof the platen. The rear ribbon 5 fis Wound upon a pair of spools 11, 12, carried in cups 13,-14 and threaded through a vibrator 15, which is mounted between the vibrator 1U and the platen. It. will be seen that the pair ot' spools 6, 7 is between the spools 11, 12, so that two spools lie edge to edge upon each side of the printing point; the rear ribbon 5 extending in rear ol the cups 8, 9. In said Underwood machines, heels provided upon they type bars press rearwardly a curved universal bar 16, which is fixed upon the front end of a frame vor table 17, thev latter carried at its rear end upon upright rocltarms 18 pivot-ed atv 19 and operating a slotted arm 20. The latter engages a pin .21, ot' a crank 22 lixed upon a rock-shaft 23, the latter having 4at each side of thev machine an arm 24 carrying a pawl 25 to engage a ratchet wheel 26 for winding the ribbon.` In said machine a shifter bar 27 throws one pawl 25 into action as at the left hand side of Fig. 1,l and the other pawl 25 out of action as at the right hand side of said figure, thus reversing means of said pawl and ratchet mechanism, I rotate at each side of the machine a pair of miter gears 2S, 29, the gears 29 fixed upon the lower ends of vertical shafts 30, .31,

which at their upper 'ends carr)Y gears 32, 100

V The gear 32 is mounted between gears 34, 35 ,carried by shafts 36 37 u on which are mounted the spools 11, G; he gear 33 is upon shafts 40,' 41 upon which are mounted 105 spools 7, 12. At Fig. 1 the winding gear 32 is being driven by the pawl 25 and is in mesh with thel gear 35 to' wind the ribbon 4 on the spool 6; while the gear 33 in mesh Iwith 38 turns idly during the delivery .of the ribbon from the spool 7; said gear 33 being discon nected from its pawl 25.

. Various means may be adopted for e ing relative shifting movements between the Winding gears 32, 33,' and the two pairs of r other'pair 34, 39;

spool gears. That illustrated is in the na# ture of a contrivance, whereby the winding gears are shifted either towards or away from each other so'as to mesh eitherwith the pair of spool gears 35, 38 as at Fig. 1,"or with the To this end, the winding gear shafts 30, 31 are preferably mounted for vibratory or lateral movements, each-shaft bein forr this purpose mounted loosely in its brac et 30a, near its lower end, so that the the relation ofthe miter gears.

are vibrated towards and from each other to,

vibration may be effected without altering These shafts effect 'shifting of the windinggears. Such movement is effected by means ofla pair of keys 47, 48 mounted upon the ends of a leverV 49, which between its ends is fixed u on a rock shaft 50, extending rearwardly an havv ing upon its rear end an upstanding arm 51,'

which by the depression of said keys is caused to vibrate transversely in the'mach-ine. At the upper end'said arm 51 looselyen- .gages a bar 52, which extends across thema? A chine and'is guided by studs 53. Said -bar 52has an arm 54, through which passes the vertical winding gear shaft 30, so vthat the I vibration of said arm 51 causes the shifting able 'by means of the universal bar frame 1'7` so as to car of said windin gear between the spool gears 34 and 35. T e other`end of the shifter bar 52 is pivoted at 55 to one end of a.- lever 56. The winding gear shaft 31 passes through the front end of said lever, Which i s pivoted inidway between its ends at 58-upon the framework. By this means the shafts 30, 31 to- .gether with their gears 32, 33 are caused to move either towards each other or away from each other to mesh with either pair of spool gears. yielding detent 60 working in notches 61 and 62 in said bar 52 holds the slides with their connections in either of the positionsin which they are thus shifted.. When the parts areatthe. other extreme from that seen in the figures, the outer spools 11 and 12 are connected to the winding mechanism, While the inner spools are disconnected therefrom. 'Y I .The ribbon vibrators 10 and 15 are operup vone ribbon or the-other during the .prmting strokes of the type bars.

To the lower end of the vibrator 10 is piv'- oted the front end of alever 63; and to the lower end of the lvibra-,tor l15v is connected a lever 64. Both levers are pivoted at 65 -upon a bracket 66 carried by the usual vertically case shift operation.

1 the universal-,bar fra-me.

shiftable platen su porting rail' 67 of the .Underwood mac ine, so that. the levers .together with the vibrators are shifted up and down at the platen shifting movements of said. machine. Said levers vare operated by means of a pan` of upstandinglevers 68, and 69 pivoted at their-lower ends at 70, upon some fixed portion of the machine and having at their upper ends vertical slots 71 and'72 to engage pins 73, and 74 provided upon -upstanding arms 75 and 76 of the levers 63 andl 64 5 said slots accommodating the up and down movements of the'levers at the lever 68 or 69, its associated lever 63 or 64 is caused to throw up its attached ribbon vibrator10or15. Y

These levers 68 69 are actuated by the universal bar frame 17, but only one lever can be actuated at a time; said frame carrying a slide 7,7 guided by studs 7S and havinga toe 79 to engage either lever 68 or 69 accordingto. the adjustment f the slide. At Figs. 1, 2' and 5, said toe is shown in position to engage By vibrating' either l the lever 68; While at Fig. 4 it is shown in positionto engage the lever 69. When it engages either lever the other lever stands idle, so that only one vibrator at a time is called int action. The shifting of said slide 77 is effected b a vertical pin 80, extending u to the shift ar 52and fixed tothe latter. 1e movement of said bar 52 for connecting the winding mechanism to either pair of lift the slide 77'upon the frame 17 so that the toe 79 will operatethat lever. 68 or 69 'Which'controls the ribbon `vibrator carrying the ribbon, which is wound upon the active ,nation oftwo pairs of spools, each spool p ro'- vided with agear, two winding gears for said spools, is also effective through the pin 80 to I' S spools, and means for vibrating said-winding,

gears to engage withV either pair of spool gears.,

2. In a typewriting machine, the combi-i" nation of two pairs of spools,each spool provided with afgear, two winding gears for said spools, Aand means forvibrating said winding gears to engage .with either pair of spool gears, and means for reversing the directionl of winding ofthe ribbons.

.upon all of said spools,

,essere 3. In a' typewriting machine the' combination with two pairs of spools, each provided with a gear, of -two winding gears, shafts u on which lsaid 'riding gears are mounte means for vibrating said shafts so that their gears may. mesh with either pair of for rotating said shafts,

'spool gears, means land means forf reversing' said shaft rotating,

meansso as to reverse the 'direction of winding of the ribbons.v

4.- In a typewriting machine, nation with a'platenl and types strike thereo`n, of two pairs. of s ools mounted edge to. edge, one pair of spoo s between the spoolsof the other air, sothat .two spools are` at each side of t e printing point, gears two winding gears thecombi-A one at each side-of the rintingpoin't, and

y means ,for vibrating sai winding gears simultaneously either towards, or awayfrom tion with a platen,

'mounted edgel to edge, one 'tween-"the ,spools point, gears upon a typewriting machine, the combinaoi two -pairs lof ls ools air of spoo s beofthe ot er pair, so that two spools are at each side of the printing gears ,oneat'each side Vof the printing point, shafts whereon saidwinding. gears are mounted, means fdr vibrating said shafts, so

as`to caiise said winding cause the reverse.

e gears tomesh with either pair'of spool gears, means forrotating said shafts, and 'means for changing the, direction of rotationof said shafts so as -to direction of travel of the ribbon to 6. In atypewritingmachine, the combina'- tion with 'a platen, gears for all of 'said spools, two winding4 of two pairs of spools,

gears, shafts whereon said windin gears are mounted,'.: nieans'for `rotating sai shafts, a bar haginga finger piece, and -means con# *trolledfby said bar' for shifting said win-ding vgears' forall of said spools,

gearsV into mesh with either pair of spoo gears. .v

f 7. In a'typewriting machine, the combination with a platen, of itwo pairs of spools, two winding gears,

-a shifter bar having' a finger piece, and engaging one of said winding ge'ars, and a lever spools', two winding` gears, a

ffor moving, said winding gears into mesh @tion with`two pairs of spools,

operated by said'bar and engaging the other )winding gear, so that a -movement of the' hift'e bar will cause the windinggears to 55smesh with either pair of spool gears.

8. In a typ'ewriting machine, the combinatron with two pairs o spools, of gears for said.

with either pair of spool gears, and means v,forgcausing' either -ribbon to cover and un# `.co ver the printing point at the t pe-strokes. v9. In a typewriting machine, t e combinaof gears for mounted. to

- connections all of s aid spools, winding vibrator Aoperating vbon spools.

vmember shiftab shifting device said spools, vice. formovin said win ing gears into mesh with either pair of spool gears, means connected to said shifting device for causing to cover and uncover the printing point at. the

trxpe strokes thatfribbon which 1s carried bj 70 t e spools .which ing mechanism. i

10. In a typewriting machine, the combination with a platen and types mounted to are connected to the win Astrike thereon, of two pairs of spoolsmountools between ed edge to edge, one pair of s at two spools thespools of the other pair, so t are at each'side of ^the printing point, gears upon all'of 'said spools, two winding' gears,

each winding gear being mounted between adjacent spool gears, and means for shifting said lwinding gears either towards or away from each other so as to connect with either pair of spool gears.'

11. In an ink-ribbon mechanism, the com- `12. In an ink-ribbon mechanism, the com` 4 vhina-tion of sets of spools for two ribbons; in`

dependent vibrators for said ribbons; vibrator operating.v mechanism provided with la member ism with either vibrator sin ly; and ribbon. driving mechanism provide with lmembers shiftable. to connect said mechanism with either set of-spools singly.

13. Inan ink-ribbon mechanism, the combination of sets of spools for twe ribbons; 1ndependent vibrators -for said ribbons; vibrator operatin mechanism provided with a e to connect said with either vibrator singly; mechanism provided with members shiftable to connect said mechanism with either set of spools singly- 4and. hand operated means for simultaneous yl moving the -shiftable members of said' vibrator operating and ribbon 115 drivin mechanisms 14. n an ink-ribbon mechanism, the combine-tion of separate sets of s ools for difierent ribbons; inde endent vi rators `for said ribbons; a to an actuating said vibrators; means for connecting said member with and disconnecting it from said vibrators to operate 'them singly;

aribbon driving mechanism providedwith members shif-table to connect thesame with `125 said sets of s ools singly; and a key forioperating said s iftable members and said connecting and disconnecting means.

two winding araashifting de- 65 finger-lever, and so shiftable' to connect saidmechan- 100v mechanism l ribbon driving fro moving 4member for 120 '15, Ina typewriting machine, the'comb' luncover the v printing point vvatthe type nation with two pairs of ribbon spools, of acstrokes.- tuatng means fonwindng said s ools, means JOHN C MCLAU-GHI IN movable independently'of sa"l spools for A A 5 o eratvely connecting said-pairs-of spools' 'Witnesses aernately to 'the actuating.' means andv B. C. STICKNEY,` y means for causing'either rlbon-Yto cover and KITTIE. FRANKFORT. 

